Spring-motor.



H. SCHRDER.

SPRING MOTOR. APPLICATION FILED MAR. 27, 1907.

Patented Feb. 16, 1909.

1H: Nomar: PETER: cu., wAsmNcrnN. n. c.

H. SCHRDER. SPRING MOTOR.a

APPLICATION FILED MAR.27, 1907. Patented Feb. 16

2 SHEETS-SHEET 2.

r11: Nopms PETER: co., wAsHmcraN, n. c.

HERMANN SCHRDER, OF NEW YORK, N. Y.

SEEING-MOTOR.

Specification of Letters Patent.

Patented Feb. 16, 1909.

Application filed March 27, 1907. Serial No. 364,948.

To all 'whom it may concern:

Be it known that l, HERMANN SCHRDER, subject of the Emperor' of Germany,residing at New York, in the county of New York and State of New York,have invented certain new and useful improvements in Spring-Motors, ofwhich the following is a specification.

rihis invention contemplates certain new and useful improvements inspring motors, such as are used in ruiming phonographs, sewing machines,and the like, and the invention has for its object an improvedconstruction of spring motor which may be used to run either light orcomparatively heavy machinery according to the degree to which thecompounding is carried out and which embodies comparatively few andsimple parts that are durable in construction and efficient inoperation.

The invention consists in certain constructions, arrangements andcombinations of the parts which shall hereinafter fully describe andthen point out the novel features in the appended claim.

For a full understanding of the invention and the merits thereof, andalso to acquire a knowledge of the details of construction of the meansfor elfecting the result, reference is to be had to the followingdescription and accompanying drawings, in which:

Figure 1 is a side elevation of my improved spring motor, and Eig. 2 isa top plan view thereof, partly in section.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawings by the sainereference characters.

The present embodiment of the invention comprises three compartmentsside by side, A, B and C. The two side compartments are intended for theaccommodation of the springs, the bra-ke mechanism, and the automaticgovernor, while the intermediate compartment C is intended essentiallyfor the gearing that connects the spring drums with the drive shaft. Inthe present instance the motor is mounted upon a bed 1 and the framework comprises spaced frames 2, 3, 4, and 5, that, together with theircross beams and diagonal braces, provide the s .veral compartments. Thedriven shaft 6 extends entirely across the frame work and is journaledin any desired manner therein, being provided at its ends with pulleysor other devices, to transmit the power to the apparatus or part to bedriven. The shaft 6 is provided within the compartment C with a spurpinion 'T meshing at opposite sides with spur wheels 8 8?, that aremounted on shafts 9&9a. The said shafts carry, respectively, spurpinions 10-1()il that mesh with spur gears 11-11rl on shafts 12-121.rlhese latter carry spur pinions 13-131 that mesh with two master gears14, 14a. series of driving pinions 15 extends around the periphery ofeach master gear wheel, the pinions of the series meshing with theirrespective wheel, and close together, but out of contact with eachother. Each of these pinions 15 is mounted on a drive shaft 16.

ri"he spring drums for driving the shafts 16 comprise respectively aplurality of transversely spaced disks 22 that are connected together bymeans of the cylindrical bod y portion of the drum. Each drum contains aseries of coil springs 24 separated by the disks 22, each spring beingconnected at one end to the body portion of the drum and at its otherend to a spindle 18. Each spindle 1S is provided with a reduced outerend extending through a boss 28 in the outermost disk 22, said reducedend being journaled in the framework as shown, and provided at its outerend 19 with a ratchet 20 and double pawls 21. The inner end of eachspindle 1S is formed with a socket 17 which loosely receives theprojecting end lSfl of the adjoining drive shaft 16 with which it is inalinement. rlhe innermost disk of each drum is formed with a collar 25secured by a pin or the like to the adjacent end of the shaft 16, sothat by this means the body portion of the drum is connected to thedrive shaft 16, while the spindle within the drum is not connected tothe shaft 16, but to all the inner ends of the springs 24, andconsequently the springs will drive the shaft 16. Manifestly, all of thespindles 18 may be operated to wind up the springs, either while theshafts 16 remain stationary, or while the motor is in operation.

1n order to stop thel motor at any time by means of a suitable brakingdevice, I provide the shaft 6 in the present instance with a miter gearwheel 26 fast thereon and designed for meshing engagement with eitherone or both of two cone pinions 27 secured to the spindles 28. Thesespindles 28 are mounted to slide through bearing brackets 29 secured toa frame bar, springs 30 bearing against said spindles and adapted tomove them outwardly so as dto normally hold their pinion 27 out of meshwith the miter' gear 26. Each spindle is formed with a tapered outer endadapted to fit within a correspondingly shaped socket or bearing in theadjacent end of the pressure arm 31 mounted to slide in the bracket andprovided with a handle 32 for convenient manipulation. By pressingeither one or both of the handles 32 inwardly, either one or both arms3l will move inwardly so as to press the bearing or socket at its innerend against the spindle to effect the requisite friction for producing abraking action on the driven shaft 6, it being understood that theinward motion of either one or both arms will result in carrying thepinions 27 into meshing` engagement with the said miter gear wheel.

As one form of governor that might be employed in connection with myimproved spring motor, l have illustrated a governor l stem 33 mountedto revolve in suitable bearings as shown, and provided intermediate ofits ends with a disk 34: on the surface of which a roller 35 runs duringthe rotation of the shaft, so as to hold the shaft in a true plane. Theroller 35 is carried on one end of a lateral arm 3G, projecting from thebracket that carries one end of the governor stem. The said stem isprovided with a pinion 36 meshing with a gear wheel 38 on the drivenshaft 6, so as to cause the stem to rotate when the shaft rotates. Thestem 33 carries a series of plates 39 and also a series ofconcentrically acting governor arms Li() that arc pivoted thereto andthat carry vaines or wings ill arranged in two pairs and adapted tostraddle the plates 39, so that as the motion increases the arms ii0will be carried upwardly and expose a larger extent of plate surface toact in the nature of a fan and thereby govern the speed.

From the foregoing description in connection with the accompanyingdrawings, it will be seen that I have provided a very simple andeiiicient construction of spring motor in which the spring drums arecompounded to the best advantage, as they are arranged in circularseries around a master gear wheel with which a relatively small pinion,carried on the drive shaft of the spring drums, meshes, the pinioiisbeing also arranged in circular series around the master gear wheels andby their combined action effecting a powerful impulse forV drivingaction upon the master gear wheels of the train.

Having thus described the invention, what is claimed as new is:

A spring motor comprising a framework embodying two outer frames, andtwo middle frames, the middle frames being spaced from each other, adriven shaft journaled in and extending entirely through all of theframes, master gear wheels journaled in and between the middle frames, agear connection between the driven shaft and said master gear wheels, aseries of drive shafts ournaled in said middle frames, the ends of saiddrive shafts projecting through and beyond said middle frames, gearwheels mounted upon said drive shafts and meshing with the masterwheels, spindles journaled at their outer ends in the outer frames andprojecting inwardly, and formed at their inner ends with sockets looselyreceiving the projecting ends of the respective drive shafts, springdrums mounted upon said spindles and embodying' a plurality of coilsprings that are connected at one end to the body of the drum and attheir other ends to the spindles, the inn rinostl disk of each series ofdisks being formed with a collar secured to and upon 'the adjoining' endof the adjoining drive :shaft in testimony whereof atliX my signature inpresence of two witnesses.

HERMANN SCHRDER.

lilitnesses FREDERICK S. S'rrrr, Vl N. lTooDsoN.

